Explanatory output to user on `resume`
Standardize time parsing thoughout app

Chronic has problems in ruby 1.9.2.  Try to fail more gracefully when
chronic bombs.
ignore .bundle
Don't make bundler a dependency of distributed gem

Specify versions of json and icalendar in Gemfile
Keep commands alphabetical in help
Version 1.7.1

* Adds "resume" command
Fixed bug with failed kill warning
Version 1.7.2

* Minor bug fix in kill command
Gem Version 1.7.3 -- Updated sqlite3 dependency
Implements issue #13. A 'timefactor' formatter that is a subclass of the plain text formatter. Also adds a virtual method for 'duration' on Entry to make this possible. + spec
missed one duration calculation
Added Ryan Funduk to contributors
Basic documentation of factor formatter
Implemented `t switch -` to switch to last active sheet
Document `t s -`
Version 1.7.4

* Added factor formatter
* `t sheet -` now switches to the last active sheet
Add rake to bundle
Don't freak out if sheet names are numeric

https://github.com/samg/timetrap/issues/35
Version 1.7.5

Fixed bug with numeric sheet names
Remove debugging from spec